CN114589946A - Air guide device for composite material molding - Google Patents
Air guide device for composite material molding Download PDFInfo
- Publication number
- CN114589946A CN114589946A CN202210308667.2A CN202210308667A CN114589946A CN 114589946 A CN114589946 A CN 114589946A CN 202210308667 A CN202210308667 A CN 202210308667A CN 114589946 A CN114589946 A CN 114589946A
- Authority
- CN
- China
- Prior art keywords
- air guide
- guide groove
- guide device
- composite material
- groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000000465 moulding Methods 0.000 title claims abstract description 15
- 239000004677 Nylon Substances 0.000 claims abstract description 8
- 229920006351 engineering plastic Polymers 0.000 claims abstract description 8
- 229920001778 nylon Polymers 0.000 claims abstract description 8
- 239000004696 Poly ether ether ketone Substances 0.000 claims abstract description 6
- 229920002530 polyetherether ketone Polymers 0.000 claims abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 239000000463 material Substances 0.000 abstract description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 8
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 210000001503 joint Anatomy 0.000 description 4
- 239000004820 Pressure-sensitive adhesive Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- 244000137852 Petrea volubilis Species 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007598 dipping method Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/54—Component parts, details or accessories; Auxiliary operations, e.g. feeding or storage of prepregs or SMC after impregnation or during ageing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/40—Shaping or impregnating by compression not applied
- B29C70/42—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles
- B29C70/44—Shaping or impregnating by compression not applied for producing articles of definite length, i.e. discrete articles using isostatic pressure, e.g. pressure difference-moulding, vacuum bag-moulding, autoclave-moulding or expanding rubber-moulding
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T50/00—Aeronautics or air transport
- Y02T50/40—Weight reduction
Abstract
The invention provides an air guide device for composite material molding, which comprises: a body having a vent; the first air guide groove is arranged at the bottom of the body; wherein the vent hole is communicated with the first air guide groove; the second air guide groove is arranged at the bottom of the body; the second air guide groove is perpendicular to the first air guide groove; according to the production requirements, two types of air guide devices are developed. The device utilizes a bottom groove and a vertical vent hole to form a high-efficiency vacuum passage; engineering plastics such as high-performance nylon or polyether-ether-ketone are used as materials, so that the material is pressure-resistant, temperature-resistant and convenient to use and maintain.
Description
Technical Field
The invention belongs to the technical field of aeronautical manufacturing and composite materials, and particularly relates to an air guide device for composite material molding.
Background
At present, the aviation composite material component is mainly formed by adopting a vacuum bag autoclave, and the vacuum bag and compressed air in the autoclave act on the vacuum bag to convert the pressure into pressure to apply pressure to a part.
The vacuum passage not only provides vacuum pressure, but also plays a role in removing volatile gas generated in the curing process of the composite material part.
The number of vacuum channels of the autoclave is limited, 1 vacuum air nozzle is generally arranged at the periphery of a mold at intervals of 1-2m in part forming, the capability of air guide materials such as air felt is weakened along with the increase of the distance, materials such as metal chains, nylon tubes or metal tube belts are generally needed to be adopted to assist in increasing the air guide performance when large parts are manufactured, but the metal chains, the nylon tubes and the like are inconvenient to place, are easy to damage and are not easy to maintain, and the risk of bag explosion can be increased.
Disclosure of Invention
In order to solve the problems and the defects in the prior art, the invention provides an air guide device for composite material molding, which comprises:
a body having a vent;
the first air guide groove is arranged at the bottom of the body; wherein the vent hole is communicated with the first air guide groove;
the second air guide groove is arranged at the bottom of the body; wherein the second air guide groove is perpendicular to the first air guide groove.
Preferably, at least three rows of vent holes are vertically arranged on the body.
Preferably, two sides of the body are rounded, and the top of the body is a plane.
Preferably, the body comprises:
a top surface vertically provided with a row of vent holes;
the inclined plane is provided with a curved seam.
Preferably, the body is of a triangular configuration.
Preferably, the first air guide groove is a longitudinal air guide groove, and the second air guide groove is a transverse air guide groove.
Preferably, the first air guide groove is an arc groove, and the second air guide groove is an arc groove.
Preferably, the body is made of engineering plastic; wherein the engineering plastics comprise nylon and polyether-ether-ketone.
The invention has the technical effects that:
according to the production requirements, two types of air guide devices are developed. The device utilizes a bottom groove and a vertical vent hole to form a high-efficiency vacuum passage; engineering plastics such as high-performance nylon or polyether-ether-ketone are adopted as materials, so that the pressure and temperature resistance is realized, the use and the maintenance are convenient, and the effect is good when the high-performance nylon or polyether-ether-ketone composite material is applied to a plurality of models of moulds in our company.
Drawings
FIG. 1 is a schematic diagram of an air guide according to an embodiment of the present disclosure;
FIG. 2 is a front view of an air guide provided in embodiments of the present application;
FIG. 3 is a left side view of an air guide provided in embodiments of the present application;
FIG. 4 is a top view of an air guide provided in accordance with an embodiment of the present application;
FIG. 5 is a schematic structural view of yet another gas guide provided in embodiments of the present application;
FIG. 6 is an elevational view of yet another gas guide provided in embodiments of the present application;
FIG. 7 is a top view of yet another gas guide provided in embodiments of the present application;
FIG. 8 is a left side view of yet another gas guide provided by an embodiment of the present application;
wherein, 1-the first air guide groove, 2-the vent hole, 3-the second air guide groove, 4-the bend seam.
Detailed Description
Referring to fig. 1 to 8, the present application provides an air guide device for composite material molding, the air guide device comprising: a body having a vent; the first air guide groove 1 is arranged at the bottom of the body. Wherein, the vent hole 2 is communicated with the first air guide groove; and the second air guide groove 3 is arranged at the bottom of the body.
Wherein, the second air guide groove is vertical to the first air guide groove.
In the embodiment of the application, at least three rows of vent holes are vertically arranged on the body.
In the embodiment of the application, two sides of the body are rounded, and the top of the body is a plane.
In an embodiment of the present application, the body includes: a top surface vertically provided with a row of vent holes; the inclined surface is provided with a curved seam 4.
In the embodiment of the present application, the body has a triangular structure.
In the embodiment of the present application, the first air guiding groove is a longitudinal air guiding groove, and the second air guiding groove is a transverse air guiding groove.
In this application embodiment, first air guide groove is the circular arc groove, second air guide groove is the circular arc groove.
In the embodiment of the application, the body is made of engineering plastic; wherein the engineering plastics comprise nylon and polyether ether ketone.
The specific embodiments of the present application:
1. determining a path on the die, which needs to be reinforced for air guide;
2. pasting a ventilation device according to the path, wherein the length is not enough and the ventilation device can be butted, and the butt joint gap is less than or equal to 2 mm;
3. each air guide device can be fixed by using a pressure sensitive adhesive tape or an upper adhesive tape;
4. when the ventilated felt covers the air guide device;
5. and manufacturing the vacuum bag according to a normal vacuum bag manufacturing flow.
Application method
1. Firstly, cleaning a region where a reinforced air guide device needs to be installed, and particularly removing a release agent in the region to prevent subsequent air guide device debonding;
2. determining a path which needs to be reinforced and guided on the die, and drawing the path which needs to be reinforced and guided by a high-temperature resistant marker pen;
3. preparing the type of the gas guide device, such as a straight area or an area with larger curvature, and selecting the gas guide device in the form 1, or selecting the gas guide device in the form 2 if the path required to install the gas guide device has smaller curvature;
4. preparing an air guide device with enough length according to the total length of the path, and reserving 30% of allowance;
5. checking the appearance of the air guide device, checking whether the air guide hole is communicated with the air guide groove, and removing impurities if yes; 6. the air guide device is pre-arranged in the installation path of the tool, and is cut according to the length and the butt joint requirement,
the air guide devices are required to be not overlapped, and the butt joint gap is less than or equal to 2 mm;
7. inspecting the edge of the air guide device, particularly the cut area, and removing the burrs by using sand paper with the granularity of 300 plus 400 so as to prevent subsequent operators from being injured or puncturing a vacuum bag; 8. cleaning the trimmed air guide device once by using compressed air, and removing debris and other impurities;
9. dipping clean dry gauze in acetone or alcohol, carefully wiping the bottom adhesive area of the air guide device,
before the acetone or alcohol is not volatilized, cleaning the excess acetone or alcohol by using clean dry gauze; 10. covering or wrapping the cleaned air guide device with a clean plastic film, and placing the cleaned air guide device aside for later use; 11. wiping a path on the tool, on which the air guide device is to be installed, with clean dry gauze, and if oil stains exist on the surface, cleaning the path with acetone or alcohol;
12. sticking a high-temperature-resistant double-sided tape on a path to be provided with an air guide device on a tool, rolling the double-sided tape before tearing off an upper layer of isolating film, and forbidding bridging or lapping to adopt butt joint; 13. gradually tearing off the upper isolation film, sticking the cleaned air guide devices in the path one by one, and pressing the air guide devices one by one;
14. sticking a pressure sensitive adhesive tape on the stuck air guide device at a distance of 300mm, wherein the pressure sensitive adhesive tape is required to avoid the air guide hole;
15. when in use, a release agent is required to be brushed on the air guide device, so that the air guide device is prevented from being blocked by resin overflowing during subsequent curing and molding;
16. when the vacuum bag is manufactured, the air guide device is required to be completely covered by the air permeable felt, and the vacuum nozzle is close to the air guide area as much as possible;
17. and subsequently, before the air guide device is used, whether the air guide hole and the air guide groove of the air guide device are blocked or not needs to be checked, if the air guide hole and the air guide groove are blocked, the air guide device needs to be cleaned in time, if the air guide hole and the air guide groove are blocked or seriously damaged, the air guide device can be installed again according to the steps.
Claims (8)
1. An air guide device for composite material molding, characterized in that the air guide device comprises:
a body having a vent;
the first air guide groove is arranged at the bottom of the body; wherein the vent hole is communicated with the first air guide groove;
the second air guide groove is arranged at the bottom of the body; wherein the second air guide groove is perpendicular to the first air guide groove.
2. The air guide device for composite molding according to claim 1, wherein the body is vertically provided with at least three rows of vent holes.
3. The air guide device for composite material molding according to claim 2, wherein both sides of the body are rounded and the top of the body is a flat surface.
4. The air guide for composite material molding according to claim 1, characterized in that the body comprises:
a top surface vertically provided with a row of vent holes;
the inclined plane is provided with a curved seam.
5. The air guide device for composite material molding according to claim 4, wherein the body has a triangular structure.
6. The air guide device for composite material molding according to claim 1, wherein the first air guide groove is a longitudinal air guide groove, and the second air guide groove is a transverse air guide groove.
7. The air guide device for composite material molding according to claim 6, wherein the first air guide groove is an arc groove, and the second air guide groove is an arc groove.
8. The air guide device for composite material molding according to claim 1, wherein the body is made of engineering plastic; wherein the engineering plastics comprise nylon and polyether-ether-ketone.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308667.2A CN114589946A (en) | 2022-03-25 | 2022-03-25 | Air guide device for composite material molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210308667.2A CN114589946A (en) | 2022-03-25 | 2022-03-25 | Air guide device for composite material molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114589946A true CN114589946A (en) | 2022-06-07 |
Family
ID=81819368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210308667.2A Pending CN114589946A (en) | 2022-03-25 | 2022-03-25 | Air guide device for composite material molding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114589946A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205970034U (en) * | 2016-06-23 | 2017-02-22 | 陕西飞机工业（集团）有限公司 | Combined material is air guide part for shaping |
| CN107031074A (en) * | 2016-01-07 | 2017-08-11 | 波音公司 | Ridged edge breather device for composite product |
| CN109466086A (en) * | 2018-11-05 | 2019-03-15 | 西安飞机工业（集团）有限责任公司 | A kind of pin-connected panel vacuum line structure and auxiliary vacuum pumping method |
-
2022
- 2022-03-25 CN CN202210308667.2A patent/CN114589946A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107031074A (en) * | 2016-01-07 | 2017-08-11 | 波音公司 | Ridged edge breather device for composite product |
| CN205970034U (en) * | 2016-06-23 | 2017-02-22 | 陕西飞机工业（集团）有限公司 | Combined material is air guide part for shaping |
| CN109466086A (en) * | 2018-11-05 | 2019-03-15 | 西安飞机工业（集团）有限责任公司 | A kind of pin-connected panel vacuum line structure and auxiliary vacuum pumping method |
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